Advice is a noun. When we have a problem, we ask someone for their advice. It is like a recommendation message about what might be done to address the problem. For instance:
My professors always give us good advice.
My advice is, always use your brain.
Advise
Advise is a verb. That means to give advice or suggestion to someone about what should be done. For instance:
My teacher advised me to work hard.
He advised me to change the Job.